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Liu S, Meng F, Guo S, Yuan M, Wang H, Chang X. Inhibition of α-amylase digestion by a Lonicera caerulea berry polyphenol starch complex revealed via multi-spectroscopic and molecular dynamics analyses. Int J Biol Macromol 2024; 260:129573. [PMID: 38266829 DOI: 10.1016/j.ijbiomac.2024.129573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 01/02/2024] [Accepted: 01/16/2024] [Indexed: 01/26/2024]
Abstract
Polyphenol-starch complexes exhibit synergistic and beneficial effects on both polyphenols and resistant starches. This study evaluates the inhibitory effects and mechanisms of α-amylase on a Lonicera caerulea berry polyphenol-wheat starch (LPWS) complex following high hydrostatic pressure treatments of 400 MPa for 30 min and 600 MPa for 30 min. The IC50 values for α-amylase inhibition by the complex were 3.61 ± 0.10 mg/mL and 3.42 ± 0.08 mg/mL at a 10 % (w/w) polyphenol content. This interaction was further supported by Fourier-transform infrared spectroscopy and circular dichroism, which confirmed that the alpha helix component of the secondary structure of α-amylase was reduced due to the complex. Multifluorescence spectroscopy revealed that the complex induces changes in the microenvironment of fluorophores surrounding the α-amylase active site. Molecular dynamics simulations and molecular docking revealed that the active site of amylose within the complex becomes enveloped in polyphenol clusters. This wrapping effect reduced the hydrogen bonds between amylose and α-amylase, decreasing from 16 groups to just one group. In summary, the LPWS complex represents a low-digestible carbohydrate food source, thus laying the groundwork for the research and development of functional foods aimed at postprandial hypoglycemic effects.
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Affiliation(s)
- Suwen Liu
- Engineering Research Center of Chestnut Industry Technology of Ministry of Education, College of Food Science & Technology, Hebei Normal University of Science and Technology, Qinhuangdao, Hebei 066004, China; Hebei Yanshan Special Industrial Technology Research Institute, Qinhuangdao 066004, China.
| | - Fanna Meng
- Engineering Research Center of Chestnut Industry Technology of Ministry of Education, College of Food Science & Technology, Hebei Normal University of Science and Technology, Qinhuangdao, Hebei 066004, China
| | - Shuo Guo
- Engineering Research Center of Chestnut Industry Technology of Ministry of Education, College of Food Science & Technology, Hebei Normal University of Science and Technology, Qinhuangdao, Hebei 066004, China
| | - Meng Yuan
- Engineering Research Center of Chestnut Industry Technology of Ministry of Education, College of Food Science & Technology, Hebei Normal University of Science and Technology, Qinhuangdao, Hebei 066004, China
| | - Hao Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology (TUST), Tianjin 300457, China
| | - Xuedong Chang
- Hebei Yanshan Special Industrial Technology Research Institute, Qinhuangdao 066004, China
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2
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Huang Y, Condict L, Richardson SJ, Brennan CS, Kasapis S. Exploring the inhibitory mechanism of p-coumaric acid on α-amylase via multi-spectroscopic analysis, enzymatic inhibition assay and molecular docking. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2023.108524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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3
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Kamal S, Rehman S, Bibi I, Akhter N, Amir R, Alsanie WF, Iqbal HMN. Graphene oxide/chitosan composites as novel support to provide high yield and stable formulations of pectinase for industrial applications. Int J Biol Macromol 2022; 220:683-691. [PMID: 35987366 DOI: 10.1016/j.ijbiomac.2022.08.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/01/2022] [Accepted: 08/14/2022] [Indexed: 11/24/2022]
Abstract
An extracellular pectinase from a mixed consortium of Bacillus sp. (BSP) was immobilized onto graphene oxide/chitosan composite (GO/CS) through covalent binding to enhance its recycling and operational stability features. Different parameters were optimized, including cross-linker concentration (%), time, pH, and GO/CS-pectinase ratios. GO/CS-pectinase was further characterized by FT-IR and XRD. The activity of GO/CS-pectinase was reached up to 804 μmolmin-1 with an immobilization efficiency of 80.64 ± 1.15 % under optimum conditions. GO/CS-pectinase exhibited a 3.0-folds higher half-life (t1/2) than free pectinase at 50, 55, and 60 °C, respectively. The Vmax and KM values of GO/CS-pectinase were found to be nearly equal to the free pectinase indicating that conformational flexibility was retained. Kd, t1/2, ∆G*, ∆H*, and ∆S* of both free pectinase and GO/CS-pectinase was 0.0339 & 0.0721 min-1, 9.62 and 40.44 min, 81.35, 90.72 kJmol-1, 47.098 & 63.635 kJmol-1, -102.86 & -81.340 Jmole-1 K-1. SEM morphological analysis further confirmed the successful binding of pectinase with GO/CS, which retained about 92 % of its original catalytic activity after ten consecutive reaction cycles. Finally, GO/CS-pectinase was employed for guava juice clarification which exhibited the turbidity reduction up to 81 % after 75 min of treatment.
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Affiliation(s)
- Shagufta Kamal
- Department of Biochemistry, Government College University Faisalabad, Pakistan.
| | - Saima Rehman
- Department of Chemistry, Government College University Faisalabad, Pakistan
| | - Ismat Bibi
- Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Naheed Akhter
- College of Allied Health Professionals, Faculty of Medical Sciences, Government College University Faisalabad, Pakistan
| | - Rija Amir
- Department of Chemistry, Government College University Faisalabad, Pakistan
| | - Walaa F Alsanie
- Department of Clinical Laboratories Sciences, The Faculty of Applied Medical Sciences, Taif University, Taif, Saudi Arabia; Centre of Biomedical Sciences Research (CBSR), Deanship of Scientific Research, Taif University, Saudi Arabia
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico.
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4
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Razzaghi M, Homaei A, Vianello F, Azad T, Sharma T, Nadda AK, Stevanato R, Bilal M, Iqbal HMN. Industrial applications of immobilized nano-biocatalysts. Bioprocess Biosyst Eng 2022; 45:237-256. [PMID: 34596787 DOI: 10.1007/s00449-021-02647-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 09/24/2021] [Indexed: 02/05/2023]
Abstract
Immobilized enzyme-based catalytic constructs could greatly improve various industrial processes due to their extraordinary catalytic activity and reaction specificity. In recent decades, nano-enzymes, defined as enzyme immobilized on nanomaterials, gained popularity for the enzymes' improved stability, reusability, and ease of separation from the biocatalytic process. Thus, enzymes can be strategically incorporated into nanostructured materials to engineer nano-enzymes, such as nanoporous particles, nanofibers, nanoflowers, nanogels, nanomembranes, metal-organic frameworks, multi-walled or single-walled carbon nanotubes, and nanoparticles with tuned shape and size. Surface-area-to-volume ratio, pore-volume, chemical compositions, electrical charge or conductivity of nanomaterials, protein charge, hydrophobicity, and amino acid composition on protein surface play fundamental roles in the nano-enzyme preparation and catalytic properties. With proper understanding, the optimization of the above-mentioned factors will lead to favorable micro-environments for biocatalysts of industrial relevance. Thus, the application of nano-enzymes promise to further strengthen the advances in catalysis, biotransformation, biosensing, and biomarker discovery. Herein, this review article spotlights recent progress in nano-enzyme development and their possible implementation in different areas, including biomedicine, biosensors, bioremediation of industrial pollutants, biofuel production, textile, leather, detergent, food industries and antifouling.
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Affiliation(s)
- Mozhgan Razzaghi
- Department of Marine Biology, Faculty of Marine Science and Technology, University of Hormozgan, P.O. Box 3995, Bandar Abbas, Iran
| | - Ahmad Homaei
- Department of Marine Biology, Faculty of Marine Science and Technology, University of Hormozgan, P.O. Box 3995, Bandar Abbas, Iran.
| | - Fabio Vianello
- Department of Comparative Biomedicine and Food Science, University of Padova, Legnaro, PD, Italy
| | - Taha Azad
- Ottawa Hospital Research Institute, Ottawa, ON, K1H 8L6, Canada
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, K1H 8M5, Canada
| | - Tanvi Sharma
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Solan, Waknaghat, India
| | - Ashok Kumar Nadda
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Solan, Waknaghat, India
| | - Roberto Stevanato
- Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, Venice, Italy
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
| | - Hafiz M N Iqbal
- School of Engineering and Sciences, Tecnologico de Monterrey, 64849, Monterrey, Mexico
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5
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Gharsallah H, Ksentini I, Naayma S, Hadj Taieb K, Abdelhedi N, Schuster C, Triki MA, Ksantini M, Leclerque A. Identification of fungi in Tunisian olive orchards: characterization and biological control potential. BMC Microbiol 2020; 20:307. [PMID: 33046014 PMCID: PMC7552492 DOI: 10.1186/s12866-020-01997-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 10/05/2020] [Indexed: 01/08/2023] Open
Abstract
Background Olive production is the main agricultural activity in Tunisia. The diversity of fungi was explored in two different olive groves located in two distant geographical zones in Sfax (Tunisia) with different management practices. Results Fungal isolation was made from soil and the major olive tree pests, namely the Olive fly, Bactrocera oleae Gmelin (Diptera: Tephritidae), and the Olive psyllid, Euphyllura olivina Costa (Homoptera: Psyllidae). A total of 34 fungal isolates were identified according to their phenotypic, genotypic, biochemical and biological activities. Twenty fungal species were identified belonging to six different genera (Alternaria, Aspergillus, Cladosporium, Fusarium, Lecanicillium and Penicillium) by the analysis of their ITS1–5.8S–ITS2 ribosomal DNA region. Different bioassays performed in this work revealed that 25/34 (73.5%) of the identified fungal isolates showed an entomopathogenic and/or antagonistic activity, 9/34 (26.5%) of them displayed phytopathogenic features. Conclusions Fungal species that showed entomopathogenic and/or antagonistic potentialities and that are non-phytopathogenic, (17/34; 50%) of our fungal isolates, could be explored for olive protection against fungal diseases and pests, and might have a future application as biocontrol agents.
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Affiliation(s)
- Houda Gharsallah
- Laboratory of Improvement and Protection of Genetic Resources of Olive Tree, Tunisian Olive Institute, University of Sfax, Airport Road, P.B. 1087, 3000, Sfax, Tunisia.
| | - Ines Ksentini
- Laboratory of Improvement and Protection of Genetic Resources of Olive Tree, Tunisian Olive Institute, University of Sfax, Airport Road, P.B. 1087, 3000, Sfax, Tunisia
| | - Sourour Naayma
- Laboratory of Improvement and Protection of Genetic Resources of Olive Tree, Tunisian Olive Institute, University of Sfax, Airport Road, P.B. 1087, 3000, Sfax, Tunisia
| | - Karama Hadj Taieb
- Laboratory of Improvement and Protection of Genetic Resources of Olive Tree, Tunisian Olive Institute, University of Sfax, Airport Road, P.B. 1087, 3000, Sfax, Tunisia.,University of Sousse, Higher Institute of Agronomic Sciences of Chott Meriem, 4042, Sousse, Tunisia
| | - Nour Abdelhedi
- Laboratory of Improvement and Protection of Genetic Resources of Olive Tree, Tunisian Olive Institute, University of Sfax, Airport Road, P.B. 1087, 3000, Sfax, Tunisia
| | - Christina Schuster
- Institute for Microbiology and Biochemistry, Geisenheim University, Geisenheim, Germany.,Department of Biology, Technische Universität Darmstadt, Darmstadt, Germany
| | - Mohamed Ali Triki
- Laboratory of Improvement and Protection of Genetic Resources of Olive Tree, Tunisian Olive Institute, University of Sfax, Airport Road, P.B. 1087, 3000, Sfax, Tunisia
| | - Mohieddine Ksantini
- Laboratory of Improvement and Protection of Genetic Resources of Olive Tree, Tunisian Olive Institute, University of Sfax, Airport Road, P.B. 1087, 3000, Sfax, Tunisia
| | - Andreas Leclerque
- Institute for Microbiology and Biochemistry, Geisenheim University, Geisenheim, Germany.,Department of Biology, Technische Universität Darmstadt, Darmstadt, Germany
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Hadj Taieb K, Gharsallah H, Ksentini I, Leclerque A, Schuster C, Cheffi M, Naayma S, Triki MA, Ksantini M. Screening of biological activities of fungi associated with pistachio bark beetle, Chaetoptelius vestitus (Coleoptera, Curculionidae), infesting pistachio cultivations in Tunisia. J Appl Microbiol 2020; 128:1472-1485. [PMID: 31913566 DOI: 10.1111/jam.14572] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 12/30/2019] [Indexed: 11/26/2022]
Abstract
AIMS In this study, we aimed to explore the enzymatic diversity, the entomopathogenic and the antimicrobial potentialities of fungi associated with the pistachio bark beetle, Chaetoptelius vestitus. METHODS AND RESULTS A total of 40 isolates were screened for enzymatic diversity. Most of them, 92·5%, were able to produce at least two of the screened enzymes. Pathogenic assays performed on C. vestitus showed a high entomopathogenic activity of the isolates Ata_io_1 (A. tamarii), Fve_io_1 (F. verticillioides), Tpi_io_1 (T. pinophilus), Pal_io_1 (P. album), Pbi_io_2 (Penicillium bilaiae) and Pch_io_1 (P. chrysogenum), as based on mean mortality of C. vestitus. A screening of antimicrobial activity using well diffusion method showed that the isolates Tro_io_1 (T. pinophilus), Tat_io_1 (T. atroroseus) and Pch_io_1 (P. chrysogenum) presented the highest antibacterial activity. Furthermore, Mgu_io_1 (M. guilliermondii), Asc_io_1 (A. sclerotiorum), Ata_io_1 (A. tamarii), G. lavendula (Gla_io_1), Pva_io_1 (P. variotii), Pul_io_1 (P. ulaiense), Tat_io_1 (T. atroroseus) and Tro_io_1 (T. roseum) were active against at least two of the three tested fungal phytopathogens. CONCLUSIONS Fungal isolates representing entomopathogenic activity and a broad spectrum of antimicrobial activities can be considered as promising resources for biological pistachio trees protection. SIGNIFICANCE AND IMPACT OF THE STUDY Fungi associated with C. vestitus were investigated for detecting their potential biotechnological applications.
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Affiliation(s)
- K Hadj Taieb
- Institut Supérieur Agronomique de Chott Meriem, Université de Sousse, Sousse, Tunisie.,Institut de l'Olivier, Université de Sfax, Sfax, Tunisie
| | - H Gharsallah
- Institut de l'Olivier, Université de Sfax, Sfax, Tunisie
| | - I Ksentini
- Institut de l'Olivier, Université de Sfax, Sfax, Tunisie
| | - A Leclerque
- Institute for Microbiology and Biochemistry, Geisenheim University, Geisenheim, Germany
| | - C Schuster
- Institute for Microbiology and Biochemistry, Geisenheim University, Geisenheim, Germany
| | - M Cheffi
- Institut de l'Olivier, Université de Sfax, Sfax, Tunisie
| | - S Naayma
- Institut de l'Olivier, Université de Sfax, Sfax, Tunisie
| | - M A Triki
- Institut de l'Olivier, Université de Sfax, Sfax, Tunisie
| | - M Ksantini
- Institut de l'Olivier, Université de Sfax, Sfax, Tunisie
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7
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Asar MF, Ahmad N, Husain Q. Chitosan modified Fe3O4/graphene oxide nanocomposite as a support for high yield and stable immobilization of cellulase: its application in the saccharification of microcrystalline cellulose. Prep Biochem Biotechnol 2019; 50:460-467. [DOI: 10.1080/10826068.2019.1706562] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Mohd Faisal Asar
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Nafees Ahmad
- Department of Chemistry, Faculty of Sciences, Aligarh Muslim University, Aligarh, India
| | - Qayyum Husain
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
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8
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Myco-Nanotechnological Approach for Improved Degradation of Lignocellulosic Waste: Its Future Aspect. Fungal Biol 2019. [DOI: 10.1007/978-3-030-23834-6_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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Gharsallah H, Ksentini I, Abdelhedi N, Naayma S, Hadj Taieb K, Sahnoun M, Triki MA, Ksantini M, Leclerque A. Screening of bacterial isolates related to olive orchard pests in Tunisia using 16S ribosomal RNA and evaluation of their biotechnological potential. J Appl Microbiol 2018; 126:489-502. [PMID: 30451348 DOI: 10.1111/jam.14159] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 10/17/2018] [Accepted: 11/02/2018] [Indexed: 11/28/2022]
Abstract
AIM This study investigated the bacterial diversity of dead insects collected from olive tree orchards widely cultivated in Tunisia. We aimed to explore metabolic diversity, screen enzymatic activities for biotechnological applications and carry out preliminary bioassays for bio-insecticide development. METHODS AND RESULTS A total of 50 bacteria strains were randomly isolated from four different biotopes situated in Sfax (Tunisia). 16S rRNA gene sequencing was used to identify 24 species, and isolates were evaluated for enzymatic activity and antimicrobial potential. Nineteen of the total number of Bacillus strains have enzymatic activity compared to strains from the other genera (14/50). Our bacterial collection was evaluated for antimicrobial potential against bacterial and fungal isolates. Isolates B8-2 (Bacillus subtilis) showed strong antibacterial activities and isolates B2-3 (Bacillus licheniformis) and B10-1 (Serratia marcescens) showed the highest antifungal activity. Seventeen of the total number of isolates caused greater than 50% mortality rate of second and fourth instar larvae of Ephestia kuehniella. CONCLUSION The selected species from olive orchards represent a broad spectrum of antimicrobial and insecticidal activities and can be considered promising resources in biological control. SIGNIFICANCE AND IMPACT OF THE STUDY Bacteria isolated from olive pests in olive orchards were investigated for detecting their potential biotechnological applications.
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Affiliation(s)
- H Gharsallah
- Tunisian Olive Institute, University of Sfax, Sfax, Tunisia
| | - I Ksentini
- Tunisian Olive Institute, University of Sfax, Sfax, Tunisia
| | - N Abdelhedi
- Tunisian Olive Institute, University of Sfax, Sfax, Tunisia
| | - S Naayma
- Tunisian Olive Institute, University of Sfax, Sfax, Tunisia
| | - K Hadj Taieb
- Tunisian Olive Institute, University of Sfax, Sfax, Tunisia
| | - M Sahnoun
- Tunisian Olive Institute, University of Sfax, Sfax, Tunisia
| | - M A Triki
- Tunisian Olive Institute, University of Sfax, Sfax, Tunisia
| | - M Ksantini
- Tunisian Olive Institute, University of Sfax, Sfax, Tunisia
| | - A Leclerque
- Institute for Microbiology and Biochemistry, Geisenheim University, Geisenheim, Germany
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10
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Xu L, Li W, Chen Z, Guo Q, Wang C, Santhanam RK, Chen H. Inhibitory effect of epigallocatechin-3-O-gallate on α-glucosidase and its hypoglycemic effect via targeting PI3K/AKT signaling pathway in L6 skeletal muscle cells. Int J Biol Macromol 2018; 125:605-611. [PMID: 30529552 DOI: 10.1016/j.ijbiomac.2018.12.064] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 12/05/2018] [Accepted: 12/06/2018] [Indexed: 12/28/2022]
Abstract
Epigallocatechin-3-O-gallate (EGCG), a tea polyphenol is renowned for its anti-diabetic properties, however limited studies elucidate its hypoglycemic mechanism from multi-perspectives. In the present study, the interaction between EGCG and α-glucosidase was investigated through kinetics analysis, fluorescence spectra, Fourier transform infrared (FT-IR) spectra and molecular docking studies. Additionally, the effect of EGCG on glucose uptake and its related signaling pathway in L6 muscle cells were also investigated. The results showed that the α-glucosidase inhibitory activity of EGCG (IC50 = 19.5 ± 0.3 μM) was higher than that acarbose (IC50 = 278.7 ± 1.1 μM). EGCG inhibited α-glucosidase in a reversible and non-competitive manner. EGCG quenched the fluorescence of α-glucosidase due to the complex formation between EGCG and α-glucosidase, where the hydrogen bonds played a critical role. Microenvironment and the secondary structure of α-glucosidase were highly influenced by EGCG. Molecular docking results indicated that the binding sites on α-glucosidase for EGCG were close to the active site pocket of the enzyme. EGCG was also found to enhance the glucose uptake and promote GLUT4 translocation to plasma membrane via PI3K/AKT signaling pathway in L6 skeletal muscle cells. Overall, these results revealed the possible hypoglycemic mechanism of EGCG.
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Affiliation(s)
- Leilei Xu
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, PR China
| | - Weiwei Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, PR China
| | - Zhongqin Chen
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, PR China
| | - Qingwen Guo
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, PR China
| | - Chunli Wang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, PR China
| | - Ramesh Kumar Santhanam
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, PR China
| | - Haixia Chen
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, PR China.
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11
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Ji N, Liu C, Li M, Sun Q, Xiong L. Interaction of cellulose nanocrystals and amylase: Its influence on enzyme activity and resistant starch content. Food Chem 2018; 245:481-487. [DOI: 10.1016/j.foodchem.2017.10.130] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 10/16/2017] [Accepted: 10/25/2017] [Indexed: 11/30/2022]
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12
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Khan MA, Khan MJ. Nano-gold displayed anti-inflammatory property via NF-kB pathways by suppressing COX-2 activity. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:1149-1158. [PMID: 29553845 DOI: 10.1080/21691401.2018.1446968] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Rheumatoid arthritis (RA) is an autoimmune inflammatory disease, affecting almost 1% of world population. Although the exact cause of RA is not known but the complex interaction between inflammatory mediators like tumour necrosis factor-α (TNF-α), interleukin-1β (IL-1β), cyclooxygenase-2 (COX-2) and nitric oxide (NO) is accountable for cartilage destruction in joints. Gold is used for arthritis treatment since long without knowing its mechanism of action. Hence, the present study was designed to assess antiarthritic activity of nanogold (AuNGs) in collagen-induced arthritic (CIA) rat model by virtue of decreasing inflammatory mediators and oxidative stress. After induction CIA rats were treated with AuNGs in phosphate buffer at a dose of 20 μg/kg body weight for 20 days and found a significant decrease in the level of inflammatory mediators like TNF-α, IL-1β, COX-2 and transcription factor NF-kB (Nuclear factor-kB), which was found to be elevated in CIA rats. Additionally imbalance in oxidant and antioxidant status were determined and perceived that AuNGs remarkably attenuates the imbalance in level of antioxidant and oxidant near to normal. In consistent to biochemical results, mRNA expression of NF-kB, TNF-α, COX-2, and iNOS were also up-regulated in CIA rats, which were considerably down regulated by AuNGs treatment. These findings were positively correlated with the histological results of joints, displayed reduced inflammation and bone erosion in treated group. This study demonstrates the ability of AuNGs to ameliorate production of inflammatory mediators and oxidative stress in CIA rats. Induction of arthritis in rats showed increased inflammation, which activate the transcription factor NF-kB through activation of of IkB kinases (IKK) and ubiquination/proteosome degradation of IKB and transportation of activated NF-kB from cytoplasm to nucleus. In nucleus activated NF-kB bind to the promoter region of target gene and up regulate the production of pro-inflammatory cytokines, COX-2 and other inflammatory mediators that leads to cartilage destruction. AuNGs inhibit the activation of NF-kB and other inflammatory mediators and attenuate inflammation and cartilage destruction. COX-2: cyclooxygenase-2; IKK: IkB kinases; IKB: I Kappa B; IL-1β: interleukin-6; IL-6: interleukin-6; iNOS: inducible nitric oxide synthase; NF-kB: nuclear transcription factor kappa B; ROS: reactive oxygen species; TNF-α: tumour necrosis factor-alpha.
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Affiliation(s)
- Mahmood Ahmad Khan
- a Department of Biochemistry , University College of Medical Sciences & GTB Hospital , Delhi , India
| | - Mohd Jahir Khan
- b School of Biotechnology , Jawaharlal Nehru University , New Delhi , India
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13
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Synthesis, Characterization, and Applications of Nanographene-Armored Enzymes. Methods Enzymol 2018; 609:83-142. [DOI: 10.1016/bs.mie.2018.05.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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14
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Jiang S, Li M, Chang R, Xiong L, Sun Q. In vitro inhibition of pancreatic α-amylase by spherical and polygonal starch nanoparticles. Food Funct 2018; 9:355-363. [DOI: 10.1039/c7fo01381g] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Nanoparticles are novel and fascinating materials for tuning the activities of enzymes.
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Affiliation(s)
- Suisui Jiang
- College of Food Science and Engineering
- Qingdao Agricultural University
- China
| | - Man Li
- College of Food Science and Engineering
- Qingdao Agricultural University
- China
| | - Ranran Chang
- College of Food Science and Engineering
- Qingdao Agricultural University
- China
| | - Liu Xiong
- College of Food Science and Engineering
- Qingdao Agricultural University
- China
| | - Qingjie Sun
- College of Food Science and Engineering
- Qingdao Agricultural University
- China
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15
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Ren M, Horn H, Frimmel FH. Aggregation behavior of TiO 2 nanoparticles in municipal effluent: Influence of ionic strengthen and organic compounds. WATER RESEARCH 2017; 123:678-686. [PMID: 28710984 DOI: 10.1016/j.watres.2017.07.021] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 06/20/2017] [Accepted: 07/10/2017] [Indexed: 06/07/2023]
Abstract
The influence of ionic strengthen and dissolved organic matter (DOM) on the aggregation of TiO2 nanoparticles (NPs) in municipal effluent was investigated. The results demonstrated that DOM promoted the mobility of NPs in aquatic system by synergism between static repulsion and steric effect, while electrolytes were opposite by charge-neutralization. The physical-chemical characteristics of DOM played the major role on the mobility of NPs. Bovine serum albumin (BSA) showed the strongest enhancement on the mobility of TiO2 NPs. High adsorption of BSA introduced vast negative charges on the TiO2 NPs' surface, leading to static repulsion and neutralizing positive charges of electrolytes in surrounding as well. By contrast, another protein α-amylase retarded the aggregation rate of TiO2 NPs through steric repulsion of the long-chain construction. Humic substances (Fulvic acid and alginate) also reflected the combination of static repulsion and steric effect. However, in the high electrolytes concentration (especially Ca2+), the long-chain aliphatic compounds were prone to form calcium bridge which increased the hydrodynamic diameter of TiO2 aggregates consequently. Sodium dodecylbenzene sulfonate (SDBS) showed low adsorption capacity, while the unabsorbed SDBS retarded the aggregates caused by the changes of pH and electrolytes. These data indicated that decreasing of DOC concentration in aqueous system was important to reduce the mobility and potential risk of NPs in aqueous system.
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Affiliation(s)
- Meijie Ren
- Chair of Water Chemistry and Water Technology, Karlsruhe Institute of Technology, Engler-Bunte-Ring 1, 76131, Karlsruhe, Germany; Institute of Materials, China Academy of Physics Engineering, Mianyang 621907, Sichuan, PR China.
| | - Harald Horn
- Chair of Water Chemistry and Water Technology, Karlsruhe Institute of Technology, Engler-Bunte-Ring 1, 76131, Karlsruhe, Germany
| | - Fritz H Frimmel
- Chair of Water Chemistry and Water Technology, Karlsruhe Institute of Technology, Engler-Bunte-Ring 1, 76131, Karlsruhe, Germany
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16
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Nanomaterials as novel supports for the immobilization of amylolytic enzymes and their applications: A review. ACTA ACUST UNITED AC 2017. [DOI: 10.1515/boca-2017-0004] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
AbstractNumerous types of nanoparticles and nanocomposites have successfully been employed for the immobilization and stabilization of amylolytic enzymes; α-amylases, β-amylases, glucoamylases and pullulanases. Nano-support immobilized amylolytic enzymes retained very high activity and yield of immobilization. The immobilization of these enzymes, particularly α-amylases and pullulanases, to the nanosupports is helpful in minimizing the problem of steric hindrances during binding of substrate to the active site of the enzyme. The majority of nano-support immobilized amylolytic enzymes exhibited very high resistance to inactivation induced by different kinds of physical and chemical denaturants and these immobilized enzyme preparations maintained very high activity on their repeated and continuous uses. Amylolytic enzymes immobilized on nano-supports have successfully been applied in food, fuel, textile, paper and pulp, detergent, environmental, medical, and analytical fields.
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17
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Antony N, Balachandran S, Mohanan P. Immobilization of diastase α-amylase on nano zinc oxide. Food Chem 2016; 211:624-30. [DOI: 10.1016/j.foodchem.2016.05.049] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Revised: 05/06/2016] [Accepted: 05/09/2016] [Indexed: 10/21/2022]
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18
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Karim Z, Khan MJ, Maskat MY, Adnan R. Immobilization of horseradish peroxidase on β-cyclodextrin-capped silver nanoparticles: Its future aspects in biosensor application. Prep Biochem Biotechnol 2016; 46:321-7. [DOI: 10.1080/10826068.2015.1031389] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Zoheb Karim
- Division of Wood Science and Nanocomposite, Department of Material Science, Lulea University of Technology, Lulea, Sweden
| | - Mohd Jahir Khan
- School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Mohamad Yusof Maskat
- School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
| | - Rohana Adnan
- School of Chemical Sciences, Universiti Sains Malaysia, Minden Penang, Malaysia
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19
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Khan M, Husain Q, Naqvi AH. Graphene based magnetic nanocomposites as versatile carriers for high yield immobilization and stabilization of β-galactosidase. RSC Adv 2016. [DOI: 10.1039/c6ra06960f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The present study demonstrates an efficient method for high yield immobilization of Aspergillus oryzae β-galactosidase onto graphene-iron oxide nanocomposites (Gr@Fe3O4 NCs) by a simple adsorption mechanism.
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Affiliation(s)
- Maryam Khan
- Department of Biochemistry
- Faculty of Life Sciences
- Aligarh Muslim University
- Aligarh
- India
| | - Qayyum Husain
- Department of Biochemistry
- Faculty of Life Sciences
- Aligarh Muslim University
- Aligarh
- India
| | - Alim Husain Naqvi
- Centre of Excellence in Materials Science (Nanomaterials)
- Department of Applied Physics
- Z. H. College of Engineering & Technology
- Aligarh Muslim University
- Aligarh
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20
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Wang Y, Gu Y, Ni Y, Kokot S. Inhibition effect of graphene oxide on the catalytic activity of acetylcholinesterase enzyme. LUMINESCENCE 2015; 30:940-6. [DOI: 10.1002/bio.2841] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 10/27/2014] [Accepted: 11/30/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Yong Wang
- State Key Laboratory of Food Science and Technology; Nanchang University; Nanchang 330047 China
- Department of Chemistry; Nanchang University; Nanchang 330031 China
| | - Yao Gu
- Department of Chemistry; Nanchang University; Nanchang 330031 China
| | - Yongnian Ni
- State Key Laboratory of Food Science and Technology; Nanchang University; Nanchang 330047 China
- Department of Chemistry; Nanchang University; Nanchang 330031 China
| | - Serge Kokot
- School of Chemistry, Physics and Mechanical Engineering; Queensland University of Technology; Brisbane 4001 Australia
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21
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Sinha R, Khare SK. Differential interactions of halophilic and non-halophilic proteases with nanoparticles. ACTA ACUST UNITED AC 2014. [DOI: 10.1186/2043-7129-2-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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Khan MJ, Husain Q. INFLUENCE OF pH AND TEMPERATURE ON THE ACTIVITY OF SnO2-BOUND α-AMYLASE: A GENOTOXICITY ASSESSMENT OF SnO2NANOPARTICLES. Prep Biochem Biotechnol 2014; 44:558-71. [DOI: 10.1080/10826068.2013.835732] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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23
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Ernest V, Sekar G, Mukherjee A, Chandrasekaran N. Studies on the effect of AgNP binding on α-amylase structure of porcine pancreas and Bacillus subtilis by multi-spectroscopic methods. JOURNAL OF LUMINESCENCE 2014; 146:263-268. [DOI: 10.1016/j.jlumin.2013.09.065] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
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24
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Arunkumar P, Thanalakshmi M, Kumar P, Premkumar K. Micrococcus luteus mediated dual mode synthesis of gold nanoparticles: involvement of extracellular α-amylase and cell wall teichuronic acid. Colloids Surf B Biointerfaces 2012; 103:517-22. [PMID: 23261575 DOI: 10.1016/j.colsurfb.2012.10.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 10/22/2012] [Accepted: 10/31/2012] [Indexed: 10/27/2022]
Abstract
In the present study we have utilized the bioreductive potential of Micrococcus luteus for the synthesis of gold nanoparticles. Biochemical and physiological analysis indicate that the biosynthesized GNPs were achieved by dual mode, involving extracellular α-amylase and cell wall teichuronic acid (TUA) of M. luteus. The biosynthetic potential of both α-amylase and TUA, after isolation from bacterium, was examined. Under optimum conditions, these biomolecules reduces Au(3+) into Au(0) and the resulting GNPs were found to be stable for 1 month. The synthesized GNPs were characterized by UV-VIS spectrometry, transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) and dynamic light scattering (DLS). Results demonstrated that the synthesized GNPs were found to be monodispersive and spherical in shape with an average size of ∼6 nm and ∼50 nm for α-amylase and teichuronic acid, respectively. These findings suggest that M. luteus can be exploited as a potential biosource for the eco-friendly synthesis of gold nanoparticles.
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Affiliation(s)
- Pichaimani Arunkumar
- Cancer Genetics & Nanomedicine Laboratory, Department of Biomedical Science, School of Basic Medical Sciences, Bharathidasan University, Tiruchirappalli 620024, Tamilnadu, India
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25
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Polyaniline-assisted silver nanoparticles: a novel support for the immobilization of α-amylase. Appl Microbiol Biotechnol 2012; 97:1513-22. [DOI: 10.1007/s00253-012-4384-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Revised: 07/23/2012] [Accepted: 08/21/2012] [Indexed: 11/26/2022]
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